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bluestone
(Encyclopedia)bluestone, common name for the blue, crystalline heptahydrate of cupric sulfate called chalcanthite, a minor ore of copper. It also refers to a fine-grained, light to dark colored blue-gray sandstone....Suffolk sheep
(Encyclopedia)Suffolk sheep, relatively large breed, developed in England, well-known for its high quality meat. Considered to be a recent introduction to the United States, the breed has many desirable qualities a...Tortosa
(Encyclopedia)Tortosa tōrtōˈsə [key], city (1990 pop. 29,970), Tarragona prov., NE Spain, in Catalonia, on the Ebro (Ebre) River. It has a fishing industry and light manufacturing, producing cement, clothing, a...Cavalieri, Lina
(Encyclopedia)Cavalieri, Lina lēˈnä kävälyĕˈrē [key], 1874–1944, Italian operatic soprano. After her debut in Lisbon in 1900 she achieved great success throughout Europe and in the United States in the ly...luminescence
(Encyclopedia)luminescence, general term applied to all forms of cool light, i.e., light emitted by sources other than a hot, incandescent body, such as a blackbody radiator. Luminescence is caused by the movement ...liquid crystal
(Encyclopedia)liquid crystal, liquid whose component particles, atoms or molecules, tend to arrange themselves with a degree of order far exceeding that found in ordinary liquids and approaching that of solid cryst...Daubigny, Charles-François
(Encyclopedia)Daubigny, Charles-François shärl-fräNswäˈ dōbēnyēˈ [key], 1817–78, French landscape painter. He went to Italy early in life and later studied in Paris with Paul Delaroche. Although usually ...antibody
(Encyclopedia)antibody, protein produced by the immune system (see immunity) in response to the presence in the body of antigens: foreign proteins or polysaccharides such as bacteria, bacterial toxins, viruses, or ...Hyades, in astronomy
(Encyclopedia)Hyades hīˈədēz [key], in astronomy, open star cluster in the constellation Taurus, located immediately to the right of the bright star Aldebaran. The cluster is about 130 light-years from the eart...radar astronomy
(Encyclopedia)radar astronomy, application of radar to the determination of distances and planetary features within the solar system, such as rotation rates. A short burst of radio waves is transmitted in the direc...Browse by Subject
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